Thick acid formula dissolves stubborn rust stains and mineral stains, but will not harm plumbing or septic systems. Kills Staph, Pseudomonas, E. coli, HIV-1 (AIDS Virus) and other harmful germs on hard, non-porous surfaces. Wintergreen scent in a no-waste, angle neck bottle. Cleans, disinfects and deodorizes. EPA Registration No: 777-81-675.